Here are some of my new requests. I apologize if any of these are above MrNorbert1994's current ripping skill, but if they are, hopefully someone else can do it, and I hope all of these eventually get ripped or fixed.
The Adventures of Bayou Billy (PAL, also with SFX) - I actually like the PAL version's tempo much better. I'm surprised this got overlooked by MrNorbert1994.
The Adventures of Dr. Franken (PAL, also with SFX) - The prototype game changes tempo when run on a PAL system (meaning the game must have been intended to be released in Europe as well), so either separate rip or update for dual mode compatibility if not already present.
California Games (PAL)
Castlevania III: Dracula's Curse (PAL, also with SFX)
Cosmic Spacehead (PAL, also a different version of Linus Spacehead's Cosmic Crusade with the same music )
Donkey Kong (PAL) - Also PAL of all other Donkey Kong games.
Donkey Kong: Original Edition - 2010 Wii re-release in Europe with an additional screen from the arcade version cut from the original NES version which features its own music track.
The Fantastic Adventures of Dizzy (PAL) - Only the "Aladdin" version has the correct tempo when played on a PAL NES (this game was released in the UK as well), so the "Aladdin" version NSF should be updated for dual mode compatibility if not already present, or a separate rip should be made.
Gauntlet II (PAL with SFX, including PCM samples) - This version's music actually sounds faster than the USA version.
Indiana Jones and the Last Crusade (PAL, also with SFX) - This is the same as the UbiSoft US version of the game.
Kirby's Adventure (NTSC, also with SFX)
Maniac Mansion (PAL)
Mario Bros. (PAL)
Mario Bros. Classic - This is a more arcade-accurate port of Mario Bros. released in Europe, with the music sounding more like the NTSC version.
Mario is Missing! (PAL)
Metroid (PAL with SFX, also re-rip of NTSC versions with SFX) - This is the only PAL game I need left that's not already ripped for a possible project.
Mickey Mania 7 (PAL) - Like most other Ei-How-Yang games, changes tempo for PAL system, so should be dual NTSC-PAL if not already or separate rip.
Operation Wolf (PAL)
Paperboy (Re-rip of both versions with SFX, and there's only one song present in the current rips, but there's one or more songs during the training course at the end of each level)
Pin-Bot (PAL, also with SFX, and the NTSC version re-ripped with SFX)
Pocohontos (not Pocahontas Part 2, but a different game by Ei-How-Yang) (both NTSC and PAL tempos)
Rampart (PAL) - This is the same as the US version of the game.
Rocman X (Re-rip with SFX, also with missing continue music (different than game over music))
The Simpsons: Bartman Meets Radioactive Man (PAL, also with SFX) - This is the only un-ripped PAL The Simpsons game.
Snake, Rattle N Roll (PAL)
Snow Brothers (PAL)
Star Wars: The Empire Strikes Back (PAL)
Street Heroes - The only un-ripped Sachen game I know of.
Stuck in Castle Nessenstein
Stunt Kids (PAL)
Super Donkey Kong (PAL) - Like most other Ei-How-Yang games, changes tempo for PAL system, so should be dual NTSC-PAL if not already or separate rip.
Top Gun (PAL, also with SFX) - The PAL version of the sequel is ripped, but not the first one.
Toy Story (PAL) - Like most other Ei-How-Yang games, changes tempo for PAL system, so should be dual NTSC-PAL if not already or separate rip.
Ultimate League Soccer (PAL)
Ultimate Stuntman (PAL)
WWF WrestleMania (PAL) - The PAL versions of Steel Cage Challenge and King of the Ring are ripped, but not the first one.
PAL versions of any other Codemasters/Camerica games, if present
Also, some issues with current NSF rips:
Paperboy 2 (both versions) - See request list for information.
Panic Restaurant (PAL) - Plays too slow, possibly same problem with other Taito games?
Fire Hawk (PAL) - The pitch sounds lower than it sounds in-game in PAL mode, which sounds exactly 2 keys higher than the NSF rip (if you change the pitch in Audacity, it will sound like it should, but slightly distorted due to Audacity's pitch-shifting method.